Antibiotic
resistant
bacteria
(ARB)
and
antibiotic
resistance
genes
(ARGs)
have
drawn
much
more
attention
due
to
their
high
risk
on
human
health
ecosystem.
In
this
study,
the
performance
of
sulfidated
nanoscale
zero-valent
iron
(S-nZVI)/periodate
(PI)
system
toward
ARB
inactivation
ARGs
removal
was
systematically
investigated.
The
S-nZVI/PI
could
realize
complete
1
×
108
CFU/mL
kanamycin,
ampicillin,
tetracycline-resistant
E.
coli
HB101
within
40
min,
meanwhile,
possessed
ability
remove
intracellular
(iARGs)
(including
aphA,
tetA,
tnpA)
carried
by
HB101.
Specifically,
tnpA
after
min
reaction
0.31,
0.47,
0.39
log,
respectively.
reactive
species
attributed
were
HO•
O2•−,
which
cause
destruction
morphology
enzyme
system,
leakage
substances,
damage
iARGs.
Moreover,
influence
dosage
PI
S-nZVI,
initial
concentration
HB101,
as
well
co-existing
substance
(such
HCO3–,
NO3–,
humic
acid
(HA))
its
corresponding
iARGs
also
conducted.
It
found
that
S-nZVI
low
enhance
disinfection
system.
presence
HA
in
showed
inhibiting
role
removal.
Overall,
study
demonstrates
superiority
Journal of Applied Microbiology,
Journal Year:
2024,
Volume and Issue:
135(3)
Published: Feb. 19, 2024
Abstract
Aims
This
study
investigated
the
antimicrobial
efficacy
of
ultrasound
technology
(US)
in
combination
with
two
different
disinfectants
(Disinfectant
A
and
Disinfectant
B),
containing
peracetic
acid
(PAA)
quaternary
ammonium
compounds
(QACs),
respectively,
against
sporigenic
pathogens,
Aspergillus
brasiliensis
Bacillus
subtilis.
Methods
results
The
microbicidal
activity
coupled
treatment
was
compared
use
alone,
disinfection
strategies
evaluated
by
log
reduction
population
microorganism
inoculated
onto
stainless-steel
surface.
resulted
a
5.40
3.88
+
US)
A.
B.
subtilis,
at
850
500
ppm
PAA,
to
265
122
only).
For
B,
US,
showed
logarithmic
5.04
4.79
subtilis
078%
v
v−1
392%
QACs,
vs.
1.58
1.64
B
Moreover,
no
colonies
or
not
statistically
significant
growth
observed
within
US
bath
disinfectant.
Conclusions
greatly
enhanced
when
used
this
also
makes
it
possible
avoid
overuse
chemicals
for
disinfection.
Microorganisms,
Journal Year:
2023,
Volume and Issue:
11(8), P. 2023 - 2023
Published: Aug. 6, 2023
Foodborne
pathogens
represent
one
of
the
most
dangerous
threats
to
public
health
along
food
chain
all
over
world.
Over
time,
many
methods
were
studied
for
pathogen
inhibition
in
food,
such
as
development
novel
packaging
materials
with
enhanced
properties
microorganisms’
growth
(coatings,
films)
and
use
emerging
technologies,
like
ultrasound,
radio
frequency
or
microwave.
The
aim
this
study
was
evaluate
current
trends
industry
pathogenic
preservation
two
directions,
namely
technology
used
processing
development.
Five
technologies
discussed
study,
high-voltage
atmospheric
cold
plasma
(HVACP),
High-Pressure
Processing
(HPP),
microwaves,
(RF)
heating
ultrasound.
These
proved
be
efficient
reduction
microbial
loads
different
products.
Further,
a
series
studies
performed,
related
material
development,
by
using
antimicrobial
agents
natural
extracts,
bacteriocins
nanoparticles.
wide
range
microorganisms,
including
Gram-negative
Gram-positive
bacteria,
fungi
yeasts.
Advanced
oxidation
processes
based
on
activated
peracetic
acid
(PAA)
have
been
widely
used
in
water
treatment.
In
this
study,
magnetite
was
first
employed
PAA
activation
for
Bisphenol
A
(BPA)
degradation.
The
results
showed
that
the
magnetic/PAA
system
degraded
94.6%
BPA
60
min
at
neutral
pH
(pH=6.7),
exhibiting
a
higher
rate
constant
(kobs=0.051
min-1)
than
or
alone.
X-ray
photoelectron
spectroscopy
(XPS)
proved
≡Fe(II)
and
surface
hydroxyl
group
(OOH)
were
dominant
active
sites,
which
promoted
electron
transfer
between
magnetite,
PAA,
BPA.
According
to
scavenging
experiments
paramagnetic
resonance
(EPR)
spectrum,
main
reactive
oxygen
species
responsible
degradation
include
organic
radicals(·CH3COOO),
Hydroxyl
radical(·OH)
singlet
(1O2).
pathway
determined
by
LC-MS
analysis,
toxicity
of
intermediates
evaluated
ECOSAR
wheat
seed
growth
inhibition
experiment.
addition,
magnetite/PAA
presented
good
adaptability
under
both
acidic
conditions,
demonstrating
efficient
even
presence
complex
matrices
such
as
Cl−,
NO3−
humic
bodies
while
HCO3-
H2PO4-
inhibited
This
study
not
only
reveals
mechanism
activating
but
also
provides
new
idea
applying
PAA-based
AOPs
remove
micropollutants
wastewater.
In
this
work,
the
prepared
hexagonal
prismatic
CaO/ZnO
composites
exhibit
efficient
and
long-lasting
antimicrobial
effects.
The
results
of
density
functional
theory
calculations
optical
property
tests
indicate
that
have
best
electron-hole
separation
efficiency.
Scavenger
experiments
revealed
reactive
oxygen
species
(ROS)
bactericidal
mechanism
in
dominated
ionic
mechanism.
degree
lipid
peroxidation
bacterial
respiratory
chain
dehydrogenase
activity
assays
determined
ROS
produced
by
acted
as
an
agent
against
E.
coli,
enhancing
damage
to
interior
exterior
coli.
long-term
experiments,
pH
changes,
scavenger
were
used
explain
After
alkaline
properties
decreased,
percentage
increased
more
compared
pure
CaO
ZnO.
three
sponges
with
tested
for
their
performance
found
strong
performance,
but
test
cycle-stable
it
was
only
CaO/ZnO@PU
had
maintained
excellent
five
testing
cycles,
which
also
reflected
good
actual
filtration
experiments.
Therefore,
is
a
highly
material
great
potential
practical
applications
such
water
disinfection.
Antibiotic
resistant
bacteria
(ARB)
and
antibiotic
resistance
genes
(ARGs)
have
drawn
much
more
attention
due
to
their
high
risk
on
human
health
ecosystem.
In
this
study,
the
performance
of
sulfidated
nanoscale
zero-valent
iron
(S-nZVI)/periodate
(PI)
system
toward
ARB
inactivation
ARGs
removal
was
systematically
investigated.
The
S-nZVI/PI
could
realize
complete
1
×
108
CFU/mL
kanamycin,
ampicillin,
tetracycline-resistant
E.
coli
HB101
within
40
min,
meanwhile,
possessed
ability
remove
intracellular
(iARGs)
(including
aphA,
tetA,
tnpA)
carried
by
HB101.
Specifically,
tnpA
after
min
reaction
0.31,
0.47,
0.39
log,
respectively.
reactive
species
attributed
were
HO•
O2•−,
which
cause
destruction
morphology
enzyme
system,
leakage
substances,
damage
iARGs.
Moreover,
influence
dosage
PI
S-nZVI,
initial
concentration
HB101,
as
well
co-existing
substance
(such
HCO3–,
NO3–,
humic
acid
(HA))
its
corresponding
iARGs
also
conducted.
It
found
that
S-nZVI
low
enhance
disinfection
system.
presence
HA
in
showed
inhibiting
role
removal.
Overall,
study
demonstrates
superiority
